Currently my MMI in my A6 doesn’t work at all, I don’t know much about the history of the car, but I do know that all the components in the trunk (Radio, Amp, Nav, Sat Radio) all receive an optical signal. Not sure if they’re getting any power (don’t know how to check for that.

My current symptoms seem to be different than most, everyones displays seem to show the splash screen for a few seconds and disappear yet mine does not.

I’d like to just completely gut the current screen and put a new screen that comes with Apple CarPlay and a backup camera. Will this be possible if my current MMI is inoperable?

(When scanning the car with my OBDEleven I get a Optical 00384 - Optical data bus static code)

 

The procedure for troubleshooting the MMI system are well documented in this forum.

Happy Hunting!

 

If your MMI (Multi Media Interface) in your Audi A6 is completely inoperable and you're considering upgrading to a new screen with Apple CarPlay and a backup camera, make sure it is compatible with your Audi A6 model year and trim level. Audi's MMI systems can vary between different model years and configurations, so you'll want to ensure that the new screen is compatible with your vehicle's wiring harness and other components. Since your current MMI is not working, it's essential to verify the condition of the wiring and connections. Make sure that the new screen comes with a wiring harness that is compatible with your vehicle, or be prepared to make any necessary modifications to ensure proper connectivity.

In addition to the screen itself, you may need to consider compatibility with the control modules that interface with the MMI system. Some aftermarket screens may require additional modules or adapters to work seamlessly with your Audi's existing systems. Installing a new screen with Apple CarPlay and a backup camera may require expertise in automotive electronics and wiring. Unless you have experience with this type of installation, it's advisable to have it done by a professional installer who is familiar with Audi vehicles and aftermarket upgrades. Keep in mind that replacing the MMI screen may not necessarily resolve any underlying issues with the MMI system itself. If there are issues with power supply, control modules, or other components, those will need to be addressed separately.

 

You could narrow down the faulty component by getting an optical loop (jumper) then bypass one component at a time until you see a change.

For my car, it was the BT module under the seat. It was wet. My MMI would just flash once then turn off. Once I installed a used one off eBay, everything worked normal again.